1.14.1. fejezet Clipboard

        private void copyClick(object sender, EventArgs e)
        {
            if (System.Windows.Forms.Clipboard.ContainsText(TextDataFormat.Html))
            {
                richTextBox.Text = Clipboard.GetText(TextDataFormat.Html);
                tabControl.SelectedIndex = 0;
            }
            else if (System.Windows.Forms.Clipboard.ContainsText(TextDataFormat.Text))
            {
                richTextBox.Text = Clipboard.GetText(TextDataFormat.Text);
                tabControl.SelectedIndex = 0;
            }
            else if (System.Windows.Forms.Clipboard.ContainsText(TextDataFormat.Html))
            {
                richTextBox.Text = Clipboard.GetText(TextDataFormat.Html);
                tabControl.SelectedIndex = 0;
            }
            else if (System.Windows.Forms.Clipboard.ContainsText(TextDataFormat.Rtf))
            {
                richTextBox.Text = Clipboard.GetText(TextDataFormat.Rtf);
                tabControl.SelectedIndex = 0;
            }
            else if (System.Windows.Forms.Clipboard.ContainsImage())
            {
                pictureBox.Image = Clipboard.GetImage();
                tabControl.SelectedIndex = 1;
            }
            else if (System.Windows.Forms.Clipboard.ContainsFileDropList())
            {
                listBox.Items.Clear();
                foreach(String item in System.Windows.Forms.Clipboard.GetFileDropList())
                {
                    listBox.Items.Add(item);
                }
                tabControl.SelectedIndex = 2;
            }